outlook-mcp/calendar/tentative.js

Comprehensive MCP server for Claude to access Microsoft Outlook and Teams via Microsoft Graph API - including Email, Calendar, Contacts, Tasks, Teams, Chats, and Online Meetings

/**
 * Tentative event functionality
 */
const { callGraphAPI } = require('../utils/graph-api');
const { ensureAuthenticated } = require('../auth');

/**
 * Tentative event handler
 * @param {object} args - Tool arguments
 * @returns {object} - MCP response
 */
async function handleTentativeEvent(args) {
  try {
    const { eventId, comment } = args;

    if (!eventId) {
      return {
        error: {
          code: -32602,
          message: "Event ID is required to respond tentatively to an event"
        }
      };
    }

    // Get access token
    const accessToken = await ensureAuthenticated();

    // Build API endpoint
    const endpoint = `me/events/${eventId}/tentativelyAccept`;

    // Request body
    const body = {
      comment: comment || "Tentatively accepted via API"
    };

    console.error(`Tentatively accepting event: ${eventId}`);

    // Make API call
    await callGraphAPI(accessToken, 'POST', endpoint, body);

    return {
      content: [{
        type: "text",
        text: `✅ Event tentatively accepted successfully!

**Event ID:** ${eventId}
**Response:** Tentatively Accepted
**Comment:** ${comment || "Tentatively accepted via API"}

Your tentative response has been sent to the event organizer.`
      }]
    };
  } catch (error) {
    console.error('Error in handleTentativeEvent:', error);
    
    if (error.message === 'Authentication required') {
      return {
        error: {
          code: -32603,
          message: "Authentication required. Please use the 'authenticate' tool first."
        }
      };
    }

    return {
      error: {
        code: -32603,
        message: `Failed to tentatively accept event: ${error.message}`
      }
    };
  }
}

module.exports = handleTentativeEvent;